Tolong kak jawab pake cara ada 100 poin lhoo

44.) Sudut PSR = 180° – (28° + 43°)
= 180° – 71°
= 109° (C)

45.) d1 = 7 cm + 12 cm = 19 cm

L segitiga ABD = 2 × a × t : 2
56 cm^2 = 2 × a × 7 cm : 2
56 cm^2 : 7 cm = a
8 cm = a

d2 = 8 cm × 2 = 16 cm

L = d1 × d2 : 2
= 19 cm × 16 cm : 2
= 152 cm^2 (C)

46.) Panjang KL = 3 cm + 8 cm + 3 cm = 14 cm
Luas = (a + b) /2 × t
= (8 cm + 14 cm)/2 × 7 cm
= 11 cm × 7 cm
= 77 cm^2 (C)

44)
salah satu sifat layang :
"Diagonal yang menghubungkan sudut puncak membagi sudut puncak sama besar"

sehingga :
∠SRT = ∠QRT = 43°

∠PSR = 180° – ∠QRT – ∠SPT
∠PSR = 180° – 43° – 28°
∠PSR = 109°

Jawaban C

45)
Luas ABD = 56 cm²
1/2 x BD x AE = 56
1/2 x BD x 7 = 56
7/2 BD = 56
BD = 56 x 2/7
BD = 16 cm

D1 = BD = 16 cm
D2 = AE + EC = 7 cm + 12 cm = 19 cm

Luas layang2
= 1/2 x D1 x D2
= 1/2 x 16 cm x 19 cm
= 152 cm²

Jawaban C

46)
a = NM = 8 cm
b = KL = NM + 2.KP = 8 + 6 = 14 cm
t = NP = 7 cm

Luas trapesium
= 1/2 x (a + b) x t
= 1/2 x (8 cm + 14 cm) x 7 cm
= 1/2 x 22 cm x 7 cm
= 77 cm²

Jawaban C